Improvement in spring-equalizers



H. DAVlS.

Spring-Equalizers.

N0. 143,966. I Patented Oct. 28,1873.

AM. FHOM UTHM'RAPHIO 61M Xfasaomvss Pnacm) UNITED STATES PATENT QFFIGE.

HORACE DAVIS, or ennnrmwrsoousm.

IMPROVEMENT IN SPfiING-EQUALIZERS.

Specification forming part of Letters Patent No. 143,966, dated October28, 1873; application filed May 20, 1873. 7

To all whom it may concern:

Be it known that I, HORAGE DAVIS, of Berlin, in the county of Green Lakeand State of Wisconsin, have invented certain new and usefulImprovements in Spring Equalizers; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, that willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

Referring to the drawings, Figure 1 is a front view, and Fig. 2 avertical transverse sectional view, of my invention.

This invention has relation to spring-equalizers for wheel vehicles andit consists in the construction and novel arrangement of levers, andother devices connecting the bolster and axle, or other equivalent partshaving the spring located between them, in such a manner that any strainor pressure applied to the spring through the body or wheels of thevehicle, will be properly equalized or distributed, and the springthereby protected from injury, and rendered more available thanheretofore.

Referring to the drawings, A designates an ordinary elliptic spring,secured to the axle B by means of clips 0, and to the bolster G by meansof bolts D. The clips, as shown in the drawings, are enlarged at oneside, and slotted to receive the elbows of the bent levers E E,

which are pivoted thereto. The levers E E have each two arms, 0 e,diverging at an oblique angle. The long arms rise obliquely from theclips, or diverge toward the ends of the bolster, which has pivoted toit the short arms or links cl, to'which are jointed the ends of the longarms. The short arms project towards each other, and are pivotedtogether. Now, when pressure or strain is applied or brought to bear oneither side of the middle of the bolster or wagon-body, half of saidstrain or pressure is immediately transmitted through the levers to theother side, and the equalization of the pressure upon the springeffected. The levers may in some cases be pivoted to other devices thanclips.

Having fully described my invention, I

claim The slotted spring-clips O embracing the axle B, in combinationwith the elliptic spring A, the bent or V-shaped levers E, having theconnected arms a, and pivoted to the clips, and the short pivoted linkscl, all "constructed and arranged to operate substantially as and forthe purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this26th day of April, 1873.

HQRAOE DAVIS.

Witnesses:

O. F. SLLVER, H. O. SNOW.

